112221010212121 has 16 divisors (see below), whose sum is σ = 114976723910400. Its totient is φ = 109480839143040.

The previous prime is 112221010212079. The next prime is 112221010212149. The reversal of 112221010212121 is 121212010122211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 112221010212121 - 2¹⁹ = 112221009687833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112201010212121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48597751 + ... + 50854531.

It is an arithmetic number, because the mean of its divisors is an integer number (7186045244400).

Almost surely, 2^{112221010212121} is an apocalyptic number.

It is an amenable number.

112221010212121 is a deficient number, since it is larger than the sum of its proper divisors (2755713698279).

112221010212121 is a wasteful number, since it uses less digits than its factorization.

112221010212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260224.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 112221010212121 its reverse (121212010122211), we get a palindrome (233433020334332).

The spelling of 112221010212121 in words is "one hundred twelve trillion, two hundred twenty-one billion, ten million, two hundred twelve thousand, one hundred twenty-one".